Maxima Function
canten (expr)
Simplifies expr by renaming (see )
and permuting dummy indices. rename is restricted to sums of tensor
products in which no derivatives are present. As such it is limited
and should only be used if canform is not capable of carrying out the
required simplification.
The canten function returns a mathematically correct result only
if its argument is an expression that is fully symmetric in its indices.
For this reason, canten returns an error if allsym is not
set to true.